TODOS: -------- * Add --socket option if no HOME found (sessiond) * Use realloc() in ask_sessiond() (liblttngctl) * Multiple level of debug, DBG1, DBG2, DBG3 with -vvv (sessiond) * perror() --> PERROR() * When add context EEXIST error should inform the client that already exist. * Use lockfree hashtable for traceable-app, events list and channels list.